I can not understand why in the world you want to create 6 columns in
a table when one would suffice. A simple select.. from.. where col1=?
will turn into select..from.. where col1=?, col2=? etc., etc... The
SQL will take longer to parse. How much better speed-wise a single
column design is over the 6-columns one, I can not say. The 6-column
one will not out-perform the single-column one, that I can say.
"Marc" <Marc-Weinstock_at_si.rr.com> wrote in message news:<fe_49.195542$QD2.43806028_at_twister.nyc.rr.com>...
> Which is faster? 6 columns or 1 column with all keys. Speed is the only
> issue.
> col1 varchar(3) = aaa
> col2 varchar(3) =bbb
> col3 date =12/31/01
> col4 number(1) =1
> col5 number(1) = 0
> col6 number(1) =1
>
> OR
>
> one_column varchar2(20) = "aaabbb12312001101"
>
> I have a few tables with the same primary key. For perfomce only. does
> anyone know? MultiMillion row table.
Received on Sat Aug 10 2002 - 12:49:55 CDT
